Data Transmission Method and Apparatus

ABSTRACT

Disclosed are a data transmission method and apparatus. The method includes: a transmission node acquiring information about a data transmission mode, herein the information about the data transmission mode includes a rapid data transmission mode in which a time-domain length of data transmission is configured based on a time-domain symbol; and the transmission node transmitting data according to the acquired data transmission mode. In the data transmission method, the time-domain length of data transmission is configured based on the time-domain symbol, the setting of the time-domain length of data transmission is flexible, multiple opportunities of data transmission can exist in one subframe, resources used for data transmission can be guaranteed to be found rapidly when there is a data transmission demand, thus rapid data transmission is realized and data transmission delay is reduced.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application is the U.S. National Phase application of PCTapplication number PCT/CN2014/082875 having a PCT filing date of Jul.24, 2014, which claims priority of Chinese patent application201410153277.8 filed on Apr. 16, 2014, the disclosures of which arehereby incorporated by reference.

TECHNICAL FIELD

The present invention relates to a mobile communication technology, inparticular to a dynamic data transmission method and apparatus based ona time-domain symbol.

BACKGROUND OF RELATED ART

With the increasing perfection of commercial use of a Long-TermEvolution (LTE)/Long-Term Evolution Advanced (LTE-Advanced/LTE-A) systemof the 4th Generation (4G) mobile communication technology, technicalindex requirements on the next generation mobile communicationtechnology, i.e., the 5th Generation (5G) mobile communicationtechnology are higher and higher. The industry generally believes thatthe next generation mobile communication system should have featuressuch as ultrahigh speed, ultrahigh capacity, ultrahigh reliability andultralow delay transmission feature.

FIG. 1 is a schematic diagram of delay transmission features in existingdifferent generation mobile communication technologies. As illustratedin FIG. 1, horizontal ordinates express delay demands and longitudinalcoordinates express different generation mobile communication systems.As illustrated in FIG. 1, a delay of data transmission in a traditionalsystem of the 2nd Generation (2G) mobile communication technologyexceeds 100 ms, and this delay can reach a low delay communicationeffect in the aspect of human body muscle response; a delay of datatransmission in a system of the 3rd Generation (3G) mobile communicationtechnology is 100 ms, and this delay can reach a low delay communicationeffect in the aspect of hearing; and a delay of data transmission in a4G system is about 20 ms, and this delay can reach a low delaycommunication effect in the aspect of vision.

However, technologies for implementing delay transmission in eachgeneration mobile communication technology cannot satisfy ultralow delaycommunication requirements in application scenarios such as mobile 3Dtargets, virtual reality, intelligent transportation and intelligentpower grids. These application scenarios require that a data delay witha magnitude of 1 ms can be realized.

In an existing LTE system, a physical downlink control channel islocated on first n Orthogonal Frequency Division Multiplexing (OFDM)symbols of a subframe, and a Physical Downlink Share Channel (PDSCH) islocated after a Physical Downlink Control Channel (PDCCH) time domainand occupies the entire subframe in the time domain. In addition, anenhanced Physical Downlink Control Channel (ePDCCH) and a physicaldownlink share channel use a frequency division multiplexing mode, andtime-domain lengths are the same, as illustrated in FIG. 2 which is aschematic diagram of a physical downlink control channel and a physicaldownlink share channel in an existing LTE system. In FIG. 2, in asubframe, an oblique line shaded part expresses a PDCCH region, anoblique small check shaded part expresses an ePDCCH region and a blackpart expresses a PDSCH region.

Generally, only after user equipment receives a PDCCH/ePDCCH, a PDSCHfrequency-domain position can be known and corresponding data decodingis started to implement data transmission. Thus, in one aspect, if thePDCCH/ePDCCH receiving is delayed, thus decoding of data born by thePHSCH will be delayed; and in the other aspect, since an interval ofPDCCH/ePDCCH/PDSCH transmission in the LTE system is one subframe, eventhough there is burst super real-time data transmission, processing canbe performed by waiting for the incoming of a next subframe and thisdata transmission mode increases data transmission delay.

In addition, since the time-domain length is fixed, i.e., the entiresubframe is occupied in time domain, a frequency-domain position of datatransmission can only be adjusted. As a result, for a small data packetscenario that data transmission can be completed through a single OFDMsymbol or a plurality of OFDM symbols, data transmission can only becompleted in a delay of one subframe, this undoubtedly also increasesdata transmission delay and consequently rapid transmission of data ishindered.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problem, the embodimentsof the present invention provide a data transmission method andapparatus, which can decrease data transmission delay, satisfytransmission delay requirements under specific application scenarios andthus realize rapid transmission of data.

A data transmission method includes: a transmission node acquiringinformation about a data transmission mode, herein the information aboutthe data transmission mode includes a rapid data transmission mode, therapid data transmission mode includes: configuring a time-domain lengthof data transmission based on a time-domain symbol; and

the transmission node transmitting data according to the acquired datatransmission mode.

Optionally, the transmission node includes a sending node and thesending node only supports the rapid data transmission mode.

Optionally, the transmission node includes a sending node and areceiving node, and when the sending node not only supports the rapiddata transmission mode, but also supports a conventional datatransmission mode, the method further includes:

the sending node determining whether the receiving node uses the rapiddata transmission mode; and

when determining that the receiving node uses the rapid datatransmission mode, sending the information about the data transmissionnode to the receiving node to indicate that the data transmission modeof the receiving node is the rapid data transmission mode.

Optionally, determining whether the receiving node uses the rapid datatransmission mode includes:

determining whether the receiving node uses the rapid data transmissionmode according to preset transmission information of the receiving node.

Optionally, the preset transmission information of the receiving node atleast includes at least one of the following: transmission mode requestinformation, device type information and service type information.

Optionally, determining whether the receiving node uses the rapid datatransmission mode includes:

if the sending node receives transmission mode request information fromthe receiving node, the sending node determining that the receiving nodeuses the rapid data transmission mode; or

if the sending node determines that a type of the receiving node is adevice supporting rapid data transmission according to device typeinformation of the receiving node, the sending node determining that thereceiving node uses the rapid data transmission mode; or

if the sending node determines that a service type of the receiving nodeincludes an ultralow delay service and/or data demanded by a smallresource block according to service type information of the receivingnode, the sending node determining that the receiving node uses therapid data transmission mode; or

if the sending node determines that a receiving device is a devicesupporting rapid data transmission according to device type informationof the receiving node and determines that the receiving device is of aservice type using rapid data transmission according to a service typeof the receiving device, the sending node determining that the receivingnode uses the rapid data transmission mode.

Optionally, the transmission node includes a sending node and areceiving node, and if the sending node determines that the receivingnode simultaneously uses the rapid data transmission mode and theconventional data transmission mode, the method further includes: thesending node setting the receiving node to simultaneously use the rapiddata transmission mode and the conventional data transmission mode.

Optionally, the rapid data transmission mode and the conventional datatransmission mode of the receiving node are located in different servingcells, or are located on different subframes of a same serving cell, orare located on different time-domain symbols of a same subframe of asame serving cell.

Optionally, when the receiving node simultaneously supports the rapiddata transmission mode and the conventional data transmission mode, themethod includes at least one of the following:

a primary serving cell of the receiving node using the conventional datatransmission mode, and a secondary serving cell of the receiving nodeusing the rapid data transmission mode;

the primary serving cell of the receiving node using the conventionaldata transmission mode and a dedicated serving cell of the receivingnode using the rapid data transmission mode; different subframe sets ofa same serving cell of the receiving node using different transmissionmodes; and

different time-domain symbols of a same subframe of a same serving cellof the receiving node using different transmission modes.

Optionally, the transmission node includes a sending node and areceiving node; and acquiring the information about the datatransmission mode includes:

an upper node in a transmission network sending the information aboutthe data transmission mode to the sending node before the datatransmission, and the sending node sending the information about thedata transmission mode to the receiving node; or

the sending node sending the information about the data transmissionmode to the receiving node before the sending node sends data when thereceiving node needs to perform data transmission; or

the sending node sending the information about the data transmissionmode in control information corresponding to data when the receivingnode needs to perform data transmission; or

dynamically determining the information about the data transmission modeaccording to data information which needs to be transmitted when datatransmission is performed between the sending node and the receivingnode.

Optionally, the time-domain symbol at least includes: an OrthogonalFrequency Division Multiplexing (OFDM) symbol, or a Single CarrierFrequency Division Multiple Access (SC-FDMA) symbol, or a non-orthogonalsymbol.

Optionally, the time-domain length includes h time-domain symbols, and his a preset numerical value, or a number of time-domain symbolscontained in a time slot, or a number of time-domain symbols containedin a subframe, or a number of all or partial time-domain symbolscontained in a plurality of subframes.

Optionally, the number of the time-domain symbols for transmitting datain the time-domain length is preset; or the number of the time-domainsymbols is dynamically determined according to data information such asa size of a data packet which needs to be transmitted.

Optionally, a determining mode of a time-domain region of thetime-domain symbols in the subframe is:

determining a time-domain starting position of the time-domain symbolsaccording to position information designated by sent signaling;

or a time-domain starting position of the time-domain symbols being thesame as a time-domain starting position of a downlink control channelrelated to data, or determining a time-domain starting position of thetime-domain symbols according to a time-domain starting position of acontrol channel related to data.

Optionally, a relationship between the data channel and a correspondingcontrol channel is that:

time-domain symbols of the data channel and time-domain symbols of thecorresponding control channel have a same time-domain starting positionand time-domain ending position; or

a time-domain starting position of time-domain symbols of the datachannel is next to a time-domain ending position of time-domain symbolsof the corresponding control channel of the data channel, and at thismoment, the data channel and the corresponding control channel of thedata channel have same frequency-domain positions, or the two havedifferent or partially same frequency-domain positions; or

time-domain symbols of the data channel and time-domain symbols of thecorresponding control channel of the data channel have a sametime-domain starting position, and a time-domain length of the datachannel is greater than or equal to a time-domain length of the controlchannel, and the time-domain length of the data channel may be preset,or indicated by signaling from the sending node or determined accordingto the time-domain length of the control channel, or there is a presetmapping relationship between the time-domain length of the data channeland the time-domain length of the control channel; or

time-domain positions of time-domain symbols of the data channel aredetermined according to signaling born by the control channelcorresponding to the data channel, and a time-domain starting positionof time-domain symbols of the data channel is earlier or later than orthe same as a time-domain starting position of time-domain symbols ofthe control channel; or a time-domain starting position of time-domainsymbols of the data channel is set according to the time-domain lengthof the data channel, and a time-domain symbol region of the controlchannel is located at a preset position in a time-domain length regionof the data channel; or

a time-domain length region position of the data channel and atime-domain length region position of the control channel have a presetinterval t.

Optionally, frequency-domain positions of the data channel and thecorresponding control channel of the data channel are respectivelydetermined, and the frequency-domain positions of the data channel aredetermined according to resource indication signaling born by thecontrol channel.

Optionally, frequency-domain positions of the data channel and thecorresponding control channel are discontinuous.

Optionally, the data channel and the corresponding control channel ofthe data channel include: a downlink data channel and a correspondingdownlink control channel of the downlink data channel, and/or an uplinkdata channel and a corresponding uplink control channel of the uplinkdata channel; and

if the uplink data channel uses autonomous scheduling, the uplinkcontrol channel is used for indicating related transmission informationof the corresponding data channel.

Optionally, transmitting the data according to the data transmissionmode includes:

transmitting uplink data and a corresponding control channel of theuplink data according to the data transmission mode, and/or transmittingdownlink data and a corresponding control channel of the downlink dataaccording to the data transmission mode, herein the uplink data are bornthrough an uplink data channel, uplink control information is bornthrough an uplink control channel and the transmission includes sendingand/or receiving.

Optionally, the sending node includes a base station, a relaytransmission node, a wireless gateway or a router; and the receivingnode includes user equipment, a micro base station or a home basestation.

The embodiment of the present invention further provides a datatransmission system, at least including a transmission node,

the transmission node is configured to acquire information about a datatransmission mode and transmit data according to the acquired datatransmission mode, and the information about the data transmission modeincludes a rapid data transmission mode, the rapid data transmissionmode including: configuring a time-domain length of data transmissionbased on a time-domain symbol.

Optionally, the transmission node includes a sending node and thesending node only supports the rapid data transmission mode.

Optionally, the transmission node includes a sending node and areceiving node, and when the sending node not only supports the rapiddata transmission mode, but also supports a conventional datatransmission mode,

the sending node is further configured to determine whether thereceiving node uses the rapid data transmission mode according to presettransmission information of the receiving node, and when determiningthat the receiving node uses the rapid data transmission mode, send theinformation about the data transmission mode to the receiving node toindicate that the data transmission mode of the receiving node is therapid data transmission mode; and

the receiving node is further configured to transmit data by using therapid data transmission mode according to the indication of the sendingnode.

Optionally, the sending node is further configured to, when determiningthat the receiving node does not support the rapid data transmissionmode, determine that the receiving node transmits data according to theconventional data transmission mode; and

the receiving node is further configured to transmit data by using theconventional data transmission mode according to the indication of thesending node.

Optionally, the sending node is further configured to, when determiningthat the receiving node simultaneously supports the rapid datatransmission mode and the conventional data transmission mode, set thereceiving node to simultaneously support the rapid data transmissionmode and the conventional data transmission mode; and

the receiving node is further configured to perform data transmission inthe rapid data transmission mode and/or the conventional datatransmission mode according to setting of the sending node.

Optionally, the sending node includes a base station, a relaytransmission node, a wireless gateway or a router; and

the receiving node includes user equipment, a micro base station or ahome base station.

Optionally, the time-domain symbol at least includes: an OrthogonalFrequency Division Multiplexing (OFDM) symbol, or a Single CarrierFrequency Division Multiple Access (SC-FDMA) symbol, or a non-orthogonalsymbol.

Optionally, the time-domain length includes h time-domain symbols, and his a preset numerical value, or a number of time-domain symbolscontained in a time slot, or a number of time-domain symbols containedin a subframe, or a number of all or partial time-domain symbolscontained in a plurality of subframes.

Optionally, the number of the time-domain symbols for transmitting datain the time-domain length is preset; or the number of the time-domainsymbols is dynamically determined according to data information such asa size of a data packet which needs to be transmitted.

Optionally, a determining mode of a time-domain region of thetime-domain symbols in the subframe is:

determining a time-domain starting position of the time-domain symbolsaccording to position information designated by sent signaling;

or a time-domain starting position of the time-domain symbols being thesame as a time-domain starting position of a downlink control channelrelated to data, or determining a time-domain starting position of thetime-domain symbols according to a time-domain starting position of acontrol channel related to data.

Optionally, a relationship between the data channel and a correspondingcontrol channel is that:

time-domain symbols of the data channel and time-domain symbols of thecorresponding control channel have a same time-domain starting positionand time-domain ending position; or

a time-domain starting position of time-domain symbols of the datachannel is next to a time-domain ending position of time-domain symbolsof the corresponding control channel of the data channel, and at thismoment, the data channel and the corresponding control channel of thedata channel have same frequency-domain positions, or the two havedifferent or partially same frequency-domain positions; or

time-domain symbols of the data channel and time-domain symbols of thecorresponding control channel of the data channel have a sametime-domain starting position and a time-domain length of the datachannel is greater than or equal to a time-domain length of the controlchannel, and the time-domain length of the data channel may be preset,or indicated by signaling from the sending node or determined accordingto the time-domain length of the control channels, or there is a presetmapping relationship between the time-domain length of the data channeland the time-domain length of the control channel; or

time-domain positions of time-domain symbols of the data channel aredetermined according to signaling born by the control channelcorresponding to the data channel, and a time-domain starting positionof time-domain symbols of the data channel is earlier or later than orthe same as a time-domain starting position of time-domain symbols ofthe control channel; or a time-domain starting position of time-domainsymbols of the data channel is set according to the time-domain lengthof the data channel, and a time-domain symbol region of the controlchannel is located at a preset position in a time-domain length regionof the data channel; or

a time-domain length region position of the data channel and atime-domain length region position of the control channel have a presetinterval t.

Optionally, frequency-domain positions of the data channel and thecorresponding control channel are discontinuous.

The embodiment of the present invention further provides a sending node,configured to acquire information about a data transmission mode andtransmit data according to the acquired data transmission mode, and theinformation about the data transmission mode includes a rapid datatransmission mode, the rapid data transmission mode includes:configuring a time-domain length of data transmission based on atime-domain symbol.

Optionally, the sending node only supports the rapid data transmissionmode.

Optionally, when the sending node not only supports the rapid datatransmission mode, but also supports a conventional data transmissionmode,

the sending node is further configured to determine whether a receivingnode supports the rapid data transmission mode according to presettransmission information of the receiving node, and when determiningthat the receiving node uses the rapid data transmission mode, send theinformation about the data transmission mode to the receiving node toindicate that the data transmission mode of the receiving node is therapid data transmission mode; and

the preset transmission information of the receiving node at leastincludes at least one of the following: transmission mode requestinformation, device type information and service type information.

Optionally, the sending node is further configured to, when determiningthat the receiving node does not support the rapid data transmissionmode, determine that the receiving node transmits data according to theconventional data transmission mode.

Optionally, the sending node is further configured to, when determiningthat the receiving node simultaneously supports the rapid datatransmission mode and the conventional data transmission mode, set thereceiving node to simultaneously support the rapid data transmissionmode and the conventional data transmission mode.

Optionally, the sending node includes a base station, a relaytransmission node, a wireless gateway or a router.

Optionally, the time-domain symbol at least includes: an OrthogonalFrequency Division Multiplexing (OFDM) symbol, or a Single CarrierFrequency Division Multiple Access (SC-FDMA) symbol, or a non-orthogonalsymbol.

Optionally, the time-domain length includes h time-domain symbols, and his a preset numerical value, or a number of time-domain symbolscontained in a time slot, or a number of time-domain symbols containedin a subframe, or a number of all or partial time-domain symbolscontained in a plurality of subframes.

Optionally, the number of the time-domain symbols for transmitting datain the time-domain length is preset; or the number of the time-domainsymbols is dynamically determined according to data information such asa size of a data packet which needs to be transmitted.

Optionally, a determining mode of a time-domain region of thetime-domain symbols in the subframe is:

determining a time-domain starting position of the time-domain symbolsaccording to position information designated by sent signaling;

or a time-domain starting position of the time-domain symbols being thesame as a time-domain starting position of a downlink control channelrelated to data, or determining a time-domain starting position of thetime-domain symbols according to a time-domain starting position of acontrol channel related to data.

Optionally, a relationship between the data channel and thecorresponding control channel is that:

time-domain symbols of the data channels and time-domain symbols of thecorresponding control channel have a same time-domain starting positionand time-domain ending position; or

a time-domain starting position of time-domain symbols of the datachannel is next to a time-domain ending position of time-domain symbolsof the corresponding control channel of the data channel, and at thismoment, the data channel and the corresponding control channel of thedata channel have same frequency-domain positions, or the two havedifferent or partially same frequency-domain positions; or

time-domain symbols of the data channel and time-domain symbols of thecorresponding control channel of the data channel have a sametime-domain starting position and a time-domain length of the datachannel is greater than or equal to a time-domain length of the controlchannel, and the time-domain length of the data channel may be preset,or indicated by signaling from the sending node or determined accordingto the time-domain length of the control channel, or there is a presetmapping relationship between the time-domain length of the data channeland the time-domain length of the control channel; or

time-domain positions of time-domain symbols of the data channel aredetermined according to signaling born by the control channelcorresponding to the data channel, and a time-domain starting positionof time-domain symbols of the data channel is earlier or later than orthe same as a time-domain starting position of time-domain symbols ofthe control channel; or a time-domain starting position of time-domainsymbols of the data channel is set according to the time-domain lengthof the data channel, and a time-domain symbol region of the controlchannel is located at a preset position in a time-domain length regionof the data channel; or

a time-domain length region position of the data channel and atime-domain length region position of the control channel have a presetinterval t.

Optionally, frequency-domain positions of the data channel and thecorresponding control channel are discontinuous.

The embodiment of the present invention further provides a receivingnode, configured to acquire information about a data transmission mode;and transmit data according to the acquired data transmission mode,

and the information about the data transmission mode includes a rapiddata transmission mode, the rapid data transmission mode includes:configuring a time-domain length of data transmission based on atime-domain symbol.

Optionally, the receiving node is further configured to transmit data byusing the rapid data transmission mode and/or a conventional datatransmission mode according to an indication of a sending node.

Optionally, the receiving node includes user equipment, a micro basestation or a home base station.

Optionally, the time-domain symbol at least includes: an OrthogonalFrequency Division Multiplexing (OFDM) symbol, or a Single CarrierFrequency Division Multiple Access (SC-FDMA) symbol, or a non-orthogonalsymbol.

Optionally, the time-domain length includes h time-domain symbols, and his a preset numerical value, or a number of time-domain symbolscontained in a time slot, or a number of time-domain symbols containedin a subframe, or a number of all or partial time-domain symbolscontained in a plurality of subframes.

Optionally, the number of the time-domain symbols for transmitting datain the time-domain length is preset; or the number of the time-domainsymbols is dynamically determined according to data information such asa size of a data packet which needs to be transmitted.

Optionally, a determining mode of a time-domain region of thetime-domain symbols in the subframe is:

determining a time-domain starting position of the time-domain symbolsaccording to position information designated by sent signaling;

or a time-domain starting position of the time-domain symbols being thesame as a time-domain starting position of a downlink control channelrelated to data, or determining a time-domain starting position of thetime-domain symbols according to a time-domain starting position of acontrol channel related to data.

Optionally, a relationship between the data channel and a correspondingcontrol channel is that:

time-domain symbols of the data channel and time-domain symbols of thecorresponding control channel have a same time-domain starting positionand time-domain ending position; or

a time-domain starting position of time-domain symbols of the datachannel is next to time-domain ending position of time-domain symbols ofthe corresponding control channel of the data channel, and at thismoment, the data channel and the corresponding control channel of thedata channel have same frequency-domain positions, or the two havedifferent or partially same frequency-domain positions; or

time-domain symbols of the data channel and time-domain symbols of thecorresponding control channel of the data channel have a sametime-domain starting position, and a time-domain length of the datachannel is greater than or equal to a time-domain length of the controlchannel, and the time-domain length of the data channel may be preset,or indicated by signaling or determined according to the time-domainlength of the control channel, or there is a preset mapping relationshipbetween the time-domain length of the data channel and the time-domainlength of the control channel; or

time-domain positions of time-domain symbols of the data channel aredetermined according to signaling born by the control channelcorresponding to the data channel, and a time-domain starting positionof time-domain symbols of the data channel is earlier or later than orthe same as a time-domain starting position of time-domain symbols ofthe control channel; or a time-domain starting position of time-domainsymbols of the data channel is set according to the time-domain lengthof the data channel, and a time-domain symbol region of the controlchannel is located at a preset position in a time-domain length regionof the data channel; or

a time-domain length region position of the data channel and atime-domain length region position of the control channel have a presetinterval t.

Optionally, frequency-domain positions of the data channel and thecorresponding control channel are discontinuous.

The embodiment of the present invention further provides a computerprogram, including program instructions, which, when executed by atransmission node, enable the transmission node to execute the abovementioned method.

The embodiment of the present invention further provides a carriercarrying the above mentioned computer program.

According to the embodiments of the present invention, the sending nodeand the receiving node acquire the information about the datatransmission mode, and information about the data transmission modeincludes a rapid data transmission mode of the time-domain length ofdata transmission configured based on the time-domain symbol; and thesending node and the receiving node transmit data according to theacquired data transmission mode. In the data transmission methodprovided by the embodiment of the present invention, the time-domainlength of data transmission is configured based on the time-domainsymbol, the setting of the time-domain length of data transmission isflexible, multiple opportunities of data transmission can exist in onesubframe, resources used for data transmission can be guaranteed to befound rapidly when there is a data transmission demand, thus rapid datatransmission is realized and data transmission delay is reduced.

In addition, in the embodiments of the present invention, by configuringthe time-domain length of data transmission based on the time-domainsymbol, demands of data scheduling for time-domain resources arereduced, more flexible resource application is realized and spectrumefficiency is improved.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described here are used for providing further understandingabout the present invention and constitutes a part of the presentapplication. The schematic embodiments of the present invention and thedescription of the schematic embodiments are used for explaining thepresent invention rather than improperly limiting. Among the drawings:

FIG. 1 is a schematic diagram of delay transmission features indifferent generation mobile communication technologies;

FIG. 2 is a schematic diagram of a physical downlink control channel anda physical downlink share channel in an LTE system;

FIG. 3 is a flowchart of a data transmission method according to theembodiment of the present invention;

FIG. 4(a) is a schematic diagram of a first mode for time-domainpositions of a data channel and its corresponding control channelaccording to the embodiment of the present invention;

FIG. 4(b) is a schematic diagram of a second mode for time-domainpositions of a data channel and its corresponding control channelaccording to the embodiment of the present invention;

FIG. 4(c) is a schematic diagram of a third mode for time-domainpositions of a data channel and its corresponding control channelaccording to the embodiment of the present invention;

FIG. 4(d) is a schematic diagram of a fourth mode for time-domainpositions of a data channel and its corresponding control channelaccording to the embodiment of the present invention;

FIG. 4(e) is a schematic diagram of a fifth mode for time-domainpositions of a data channel and its corresponding control channelaccording to the embodiment of the present invention;

FIG. 5 is a schematic diagram of data sending in a rapid datatransmission mode under a spectrum share scenario according to theembodiment of the present invention;

FIG. 6(a) is a schematic diagram of a rapid data transmission mode usedby a dedicated serving cell in a multiplexing mode of the rapid datatransmission mode and a conventional data transmission mode according tothe embodiment of the present invention;

FIG. 6(b) is a schematic diagram of a conventional data transmissionmode used by a primary serving cell in a multiplexing mode of a rapiddata transmission mode and the conventional data transmission modeaccording to the embodiment of the present invention;

FIG. 7 is a schematic diagram of different transmission modes used bydifferent subframe sets of a same serving cell in a multiplexing mode ofa rapid data transmission mode and a conventional data transmission modeaccording to the embodiment of the present invention;

FIG. 8 is a schematic diagram of different transmission modes used bydifferent time-domain symbols of a same subframe of a same serving cellin a multiplexing mode of a rapid data transmission mode and aconventional data transmission mode according to the embodiment of thepresent invention.

PREFERRED EMBODIMENTS OF THE INVENTION

The embodiments of the present invention will be described below indetail in combination with the drawings. It needs to be stated that theembodiments in the present application and the features in theembodiments can be freely combined under the situation of no conflict.

FIG. 3 is a flowchart of a data transmission method according to theembodiment of the present invention. As illustrated in FIG. 3, the datatransmission method includes the following steps:

In step 300, a transmission node acquires information about a datatransmission mode, and the information about the data transmission modeincludes a rapid data transmission mode, the rapid data transmissionmode includes a time-domain length of data transmission configured baseda time-domain symbol.

The transmission node includes a sending node and a receiving node. Itneeds to be stated that, for transmission networks such as some privatenetworks or dedicated networks in which sending nodes only supportingthe rapid data transmission mode are located, all receiving nodesaccessing to the transmission networks use the rapid data transmissionmode to transmit data.

In this step, acquiring the information about the data transmission modeincludes:

mode 1: an upper node in a transmission network sends the informationabout the data transmission mode to the sending node before the datatransmission, and the sending node sends the information about the datatransmission mode to the receiving node; or

mode 2: the sending node sends the information about the datatransmission mode to the receiving node before the sending node sendsdata when the receiving node needs to perform data transmission; or

mode 3: the sending node sends the information about the datatransmission mode in control information corresponding to data beforethe sending node sends the data when the receiving node needs to performdata transmission; or

mode 4: the information about the data transmission mode is dynamicallydetermined according to data information which needs to be transmittedsuch as a size of a data packet, a service type and transmission moderequest information when data transmission is performed between thesending node and the receiving node, including: the information aboutthe data transmission mode is determined according to a size of atransmission block, e.g., if the transmission block is less than apreset value X1, a corresponding time-domain configuration informationlength is a preset value L1, and if the transmission block is greaterthan the preset value X1 and less than a preset value X2, thecorresponding time-domain configuration information length is a presetvalue L2, or the information about the data transmission mode isdetermined according to the size of the transmission block and otherinformation including system bandwidth and/or time-domain OFDM symbollength, etc. The above-mentioned modes may be combined, e.g., mode 1 ormode 2 is combined with mode 3, i.e., several time-domain lengths areconfigured in advance and the time-domain length is dynamically selectedfrom the existing configurations when data are transmitted; or mode 1 ormode 2 is combined with mode 4, i.e., several time-domain lengths areconfigured in advance and then the time-domain length is selected fromthe predetermined configurations according to an agreed way; or mode 3is combined with mode 4, i.e., the current configuration is jointlydetermined according to configuration information in current schedulinginformation and an agreed way.

In step 300,

the time-domain symbol at least includes: an Orthogonal FrequencyDivision Multiplexing (OFDM) symbol, or a Single Carrier FrequencyDivision Multiple Access (SC-FDMA) symbol, or a non-orthogonal symbol.

The time-domain length includes h time-domain symbols. Optionally, hincludes one of the following: a preset numerical value such as 1, 2, 3,4, 8 and 10, or the number of time-domain symbols contained in a timeslot, or the number of time-domain symbols contained in a subframe, orthe number of all or partial time-domain symbols contained in aplurality of subframes, and the number of time-domain symbols containedin one or more subframes mainly involves in an application scenario thatthe time-domain length of one or more subframes is less than 1 ms; orthe situation of dividing into a plurality of small data packets needsto be avoided so as to realize transmission of larger data packets.

It needs to be stated that, the subframe with a length less than 1 ms isa subframe in a frame structure newly defined in the embodiment of thepresent invention and is different from the defined subframe in theframe structure of the existing LTE system; and

the time-domain length may be a fixed length, may also be one of aplurality of preset lengths and is semi-statically or dynamicallyselected through signaling or other implicit ways (e.g., related controlchannel information, data packet repeat information, etc.).

Through the time-domain length of data transmission in the embodiment ofthe present invention, multiple opportunities of data transmission canexist within 1 ms, resources used for data transmission can beguaranteed to be found rapidly when there is a data transmission demand,and thus rapid data transmission is realized.

Optionally, the number of the time-domain symbols for transmitting datain the time-domain length is preset; or in order to realize more rapiddata transmission, the number of the time-domain symbols may bedynamically determined according to information of data which needs tobe transmitted such as a size of a data packet, such that the data canbe guaranteed to be completely transmitted within a time as short aspossible, and the problem of time delay caused by dividing one datapacket into a plurality of small data packets for transmission since thetime-domain length of data transmission is limited is avoided.

Optionally, a determining mode of a time-domain region of thetime-domain symbols in the subframe is:

determining a time-domain starting position of the time-domain symbolsaccording to position information designated by sent signaling, hereinthe signaling is transmitted through a physical layer control channel,or is RRC signaling, or MME configuration signaling; or

a time-domain starting position of the time-domain symbols being thesame as a time-domain starting position of a downlink control channelrelated to data, or determining a time-domain starting position of thetime-domain symbols according to a time-domain starting position of acontrol channel related to data, e.g., an interval between thetime-domain starting position of the data channel and the lasttime-domain position of the corresponding control channel being apredefined value, such as 0, 1, 2, 3, 6, 7, 9 and 10.

Optionally, a relationship between the data channel and a correspondingcontrol channel is that:

in a first relationship, time-domain symbols of the data channel andtime-domain symbols of the corresponding control channel have the sametime-domain starting position and time-domain ending position, asillustrated in FIG. 4(a); or

in a second relationship, a time-domain starting position of time-domainsymbols of the data channel is next to a time-domain ending position oftime-domain symbols of its corresponding control channel as illustratedin FIG. 4(b), and at this moment, the data channel and its correspondingcontrol channel have the same frequency-domain positions, or havedifferent or partially same frequency-domain positions; optionally, ifthe data channel and its corresponding control channel agree to have thesame frequency-domain positions, the frequency-domain positions of thedata channel do not need to be indicated by signaling and thefrequency-domain positions of the data channel may be determinedaccording to the detected control channel; or the frequency-domainpositions of the data channel and its corresponding control channel arerespectively determined, and the frequency-domain positions of the datachannel may be determined through resource indication signaling born bythe control channel; or

in a third relationship, time-domain symbols of the data channel andtime-domain symbols of its corresponding control channel have the sametime-domain starting position and a time-domain length of the datachannel is greater than or equal to a time-domain length of the controlchannels, as illustrated in FIG. 4(c), and the time-domain length of thedata channel may be preset, or indicated by signaling from the sendingnode (i.e., the sending node transmits a data channel time-domain lengthsignaling indication to the receiving node, and after the receiving nodereceives the signaling indication, the receiving node determines thetime-domain length of the data channel according to the signalingindication) or determined according to the time-domain length of thecontrol channel, e.g., the time-domain length of the data channel is ktimes of the time-domain length of the control channel, and k is 1, 2,3, 4, etc., or the time-domain length of the data channel and thetime-domain length of the control channel have a preset mappingrelationship, as shown in Table 1 and Table 2; at this moment, thefrequency-domain positions of the data channel and its correspondingcontrol channel are not strictly limited, i.e., may be the same and mayalso be different;

TABLE 1 Time-domain length 1 2 3 4 of contorl channel Time-domain length2 3 5 6 of data channel

or as shown in Table 2,

TABLE 2 Time-domain length 1 2 3 of contorl channel Time-domain length 24 4 of data channel

Indicating the time-domain length of the data channel through thesignaling includes: the sending node transmitting data channeltime-domain length indication signaling to the receiving node, and afterthe receiving node receives the signaling, determining the time-domainlength of the data channel according to the signaling, herein thesignaling may represent a length value, and several values may also bepreset and the value is dynamically selected according to the signaling;or

in a fourth relationship, time-domain positions of time-domain symbolsof the data channel are determined according to signaling born by thecontrol channel corresponding to the data channel, and a time-domainstarting position of time-domain symbols of the data channel may beearlier than a time-domain starting position of time-domain symbols ofthe control channel, as illustrated in FIG. 4(d), may also be the sameas a time-domain starting position of time-domain symbols of the controlchannel, as illustrated in FIG. 4(c), and may also be later than atime-domain starting position of time-domain symbols of the controlchannel, as illustrated in FIG. 4(b) or 4(e); or a time-domain startingposition of time-domain symbols of the data channel is set according tothe time-domain length of the time-domain symbols, and time-domainsymbol region of the control channel is located at preset positions inthe time-domain length region of the data channel, e.g., the time-domainlength of each data channel is 3 OFDM symbols, the time-domain symbolregion of the corresponding control channel is located on a second OFDMsymbol of the time-domain length region of the data channel, or thetime-domain length of each data channel is 5 OFDM symbols, thetime-domain symbol region of the corresponding control channel islocated on a second OFDM symbol and a third OFDM symbol of thetime-domain length region of the data channel, etc.; or

in a fifth relationship, time-domain length region positions of the datachannels and time-domain length region positions of the control channelshave a fixed interval t, as illustrated in FIG. 4(e), and at thismoment,

according to the mode of configuring the time-domain length of datatransmission based on the time-domain symbol in the embodiment of thepresent invention, in one subframe, one or more time-domain regions fortransmitting the data channel may exist, the number of the time-domainregions depends on the time-domain length of the data channel, and howto determine can be easily realized by one skilled in the art accordingto the method provided by the embodiment of the present invention andthus is not repetitively described here.

Frequency-domain positions of the data channel and its correspondingcontrol channel may be discontinuous and may also be continuous, andspecific implementation thereof does not limit the protection range ofthe present invention.

The data channel and its corresponding control channel include: adownlink data channel and its corresponding downlink control channel,and/or a uplink data channel and its corresponding uplink controlchannel, and,

the uplink control channel is used for bearing uplink controlinformation, such as Hybrid Automatic Repeat reQuest Acknowledgment(HARQ-ACK), and Channel State Information (CSI); and the time-domainlength of the uplink control channel is also allocated based on thetime-domain symbols.

Optionally, if the uplink data channel uses autonomous scheduling, theuplink control channel may be used for indicating related transmissioninformation of the corresponding data channel, e.g., a size of atransmission block, a new data packet/old data packet, versioninformation, related reference signal information, etc., and autonomousscheduling refers to pre-allocating partial sources, e.g., PUSCHresources or resources for transmitting data with a new time-frequencyunit as a unit. Under this situation, when the receiving node has a datatransmission demand, the receiving node directly transmits data on thepredefined resources and does not need to send a scheduling request tothe sending node to wait for the scheduling by the sending node, suchthat the delay caused by waiting for scheduling is decreased, the datatransmission delay is shortened and thus the data transmission speed isimproved.

Therein, the resources of the control channel are mapped by using apreset mode, e.g., locating on preset time-domain resources, datatransmission is performed according to the preset size of thetransmission block, and a fixed modulating and coding mode is used,including: a frequency domain is continuously or discretely mapped bytaking a resource block as a unit or is continuously or discretelymapped by taking a specific control channel unit; the control channeland the data channel may be multiplexed on a same resource block of asame time-domain symbol, or multiplexed on different time-domain symbolsof a same resource block, or multiplexed on different resource blocks ofa same time-domain symbol.

In step 301, the sending node and the receiving node transmit dataaccording to the acquired data transmission mode.

In this step, transmitting the data according to the data transmissionmode includes: transmitting uplink data and its corresponding controlchannel according to the data transmission mode, and/or transmittingdownlink data and its corresponding control channel according to thedata transmission mode, i.e., data transmission is performed accordingto time-frequency resources designated in the data transmission mode.Transmission includes sending and/or receiving. Therein, the uplink dataare born through the uplink data channel, uplink control information isborn through the uplink control channel; and the uplink controlinformation includes feedback information of downlink data, and/orchannel state information, and/or transmission information related touplink data, etc. The transmitted data include a size of a transmissionblock, and/or a new data packet/old data packet, and/or versioninformation, and/or a modulating mode, and/or related reference signalinformation.

The sending node receives uplink data and its corresponding controlchannel and/or sending downlink data and its corresponding controlchannel according to the configuration of the data channel and thecontrol channel in the embodiment of the present invention, and thesending node includes but not limited to a base station, a relaytransmission node, a wireless gateway or a router; and the receivingnode receives downlink data and/or sends uplink data according to theconfiguration of the data channel and the control channel in the presentinvention, and the receiving node includes but not limited to UserEquipment (UE), a micro base station or a home base station.

Through the data transmission in the embodiment of the presentinvention, when sharing different system resources, high-efficiency useof resources are guaranteed, and the problem of limited share resourceuse efficiency caused by different frame structures of all systemsduring spectrum sharing between different systems such as LTE, WIFI,High Speed Downlink Packet Access (HSDPA), 3G systems and 2G systems issolved; and meanwhile, switching of uplink and downlink resources withina shorter time is realized, e.g., downlink data transmission isperformed on partial time-domain symbols of an uplink subframe, uplinkdata transmission is performed on partial time-domain symbols of adownlink subframe, etc. FIG. 5 is a schematic diagram of datatransmission in a rapid data transmission mode under a spectrum sharescenario according to the embodiment of the present invention. In FIG.5, U expresses resources for transmitting uplink data, D expressesresources for transmitting downlink data, and GP expresses a guardinterval. As illustrated in FIG. 5, this scenario mainly utilizesflexible change of data transmission time-domain length to realize rapidscheduling of idle resources, such that the idle resources are decreasedand the resource use efficiency is improved. Therein, idle resources maybe partial uplink resources which are caused to be idle due to uplinkand downlink service asymmetry such that the idle uplink resources areused for transmitting downlink data, or partial downlink resources areidle such that the idle downlink resources are used for transmittinguplink data, or when the LTE system and other systems share spectrumresources and the other systems do not use the resources, the LTE systemmay use the idle resources to transmit uplink data or downlink data.Optionally, if the information about the data transmission mode furtherincludes: there are two or more time-domain regions for transmitting thedata channel in a subframe, i.e., a plurality of data transmissionopportunities exist in 1 ms, before transmitting the data according tothe acquired data transmission mode in this step, the method furtherincludes dividing data transmission opportunities, including:continuously dividing data transmission opportunities or dividing datatransmission opportunities according to a preset interval, and,

continuous dividing data transmission opportunities includes:

numbering all time-domain symbols available for data transmission in apreset specific time window, and sequentially setting apart every htime-time symbols into a time-domain unit, herein the time-domain unitis used for data transmission. For example, supposing that the number oftime-domain symbols available for data transmission within 1 ms is 11,if h is 2, 6 time-domain units can be set and the last time-domain unitincludes one time-domain symbol; or 5 time-domain units are set apartand the last time-domain unit includes 3 time-domain symbols. Foranother example, supposing that the number of time-domain symbolsavailable for data transmission within 3 ms is 33, if h is 3, 11time-domain units can be set apart. For another example, supposing thatthe number of time-domain symbols available for data transmission in 2ms is 20, if h is 4, 5 time-domain units can be set apart, etc.

Dividing data transmission opportunities according to the presetinterval includes:

supposing that k data transmission opportunities exist in a specifictime window, herein k is a preset value, and using remaining othertime-domain symbols for other purposes, e.g., control channeltransmission, reference signal transmission, synchronizing channel orbroadcast channel or multicast channel transmission, etc., hereinreference signals may be used for measurement and may also be used fordemodulation. For example, supposing that the specific time window is 1ms and k is 2, i.e., two data transmission opportunities exist within 1ms, and supposing that the number of available time-domain symbols in 1ms is 11 and h is 4, middle available time-domain symbols are selectedfor data transmission, e.g., the second to fifth available time-domainsymbols and the seventh to tenth available time-domain symbols arerespectively used for data transmission, and the first, sixth andeleventh time-domain symbols are used for other purposes.

The specific time window mainly limits the time-domain region used fortransmitting the data channel.

In the data transmission method provided by the embodiment of thepresent invention, the time-domain length of data transmission isconfigured based on the time-domain symbol, the setting of thetime-domain length of data transmission is flexible, multipleopportunities of data transmission can exist in one subframe, resourcesused for data transmission can be guaranteed to be found rapidly whenthere is a data transmission demand, thus rapid data transmission isrealized and data transmission delay is reduced. Further, by configuringthe time-domain length of data transmission based on the time-domainsymbol, the demands of data scheduling for time-domain resources arereduced, more flexible resource application is realized and spectrumefficiency is improved.

When the sending node not only supports the rapid data transmissionmode, but also supports a conventional data transmission mode, themethod further includes: the sending node determining whether thereceiving node uses the rapid data transmission mode, including:

the sending node determining whether the receiving node uses the rapiddata transmission mode according to preset transmission information ofthe receiving node, and when determining that the receiving node usesthe rapid data transmission mode, sending the information about the datatransmission information to the receiving node to indicate that the datatransmission mode of the receiving node is the rapid data transmissionmode.

Therein, the preset transmission information of the receiving node atleast includes at least one of the following: transmission mode requestinformation, device type information and service type information.

Determining whether the receiving node uses the rapid data transmissionmode includes:

if the sending node receives transmission mode request information fromthe receiving node, the sending node determining that the receiving nodeuses the rapid data transmission mode; or

if the sending node determines that a type of the receiving node is adevice supporting rapid data transmission according to device typeinformation of the receiving node, the sending node determining that thereceiving node uses the rapid data transmission mode; or

if the sending node determines that a service type of the receiving nodeincludes an ultralow delay service and/or data demanded by a smallresource block, e.g., an ultralow delay demand service of 1 ms, 20 ms,etc. according to service type information of the receiving node, thesending node determining that the receiving node uses the rapid datatransmission mode; or

the sending node determining whether the receiving node uses the rapiddata transmission mode according to device type information and servicetype information of the receiving node, and when a device type of thereceiving node is a device supporting the rapid data transmission modeand a service type of the receiving node is a service type using therapid data transmission mode, the sending node determining that thereceiving node uses the rapid data transmission mode.

When the device type of the receiving node is not a device supportingthe rapid data transmission mode or the service type of the receivingnode is not a service type using the rapid data transmission mode, thesending node determines that the receiving node transmits data accordingto the conventional data transmission mode.

Therein, for the receiving with an ultralow delay data transmissiondemand, the sending node further judges the current service demand, suchas Quality of service (Qos) and service type, and determines whether thereceiving node uses the rapid data transmission mode; or the sendingnode determines whether the receiving node uses the rapid datatransmission mode according to the transmission mode request informationreceived from the receiving node having the ultralow delay datatransmission demand, and if the transmission mode request information isnot received from the receiving node, the receiving node uses theconventional data transmission mode to transmit data.

Optionally, if the sending node determines that the receiving nodesimultaneously supports the rapid data transmission mode and theconventional data transmission mode, and the conventional datatransmission mode refers to the transmission mode supported by theexisting LTE standards (R8 to R12) and the corresponding data channeland control channel transmission modes, as illustrated in FIG. 2, atthis moment, the method provided by the embodiment of the presentinvention further includes:

the sending node setting the receiving node to simultaneously use therapid data transmission mode and the conventional data transmissionmode, herein the rapid data transmission mode and the conventional datatransmission mode of the receiving node are located in different servingcells (the serving cells may also be viewed as component carriers), orare located on different subframes of a same serving cell, or arelocated on different time-domain symbols of a same subframe of a sameserving cell.

Optionally, a primary serving cell uses the conventional datatransmission mode, and a secondary serving cell uses the rapid datatransmission mode; and/or

the primary serving cell uses the conventional data transmission modeand a dedicated serving cell uses the rapid data transmission mode, andthe dedicated serving cell is a serving cell specially used for therapid data transmission mode or a serving cell specially used formulti-system spectrum share (such as LTE and TD-SCDMA, LTE and WCDMA,LTE and CDMA, etc.), as illustrated in FIG. 6(a) which is a schematicdiagram of a rapid data transmission mode used by a dedicated servingcell in embodiment 1 of a multiplexing mode of the rapid datatransmission mode and a conventional data transmission mode according tothe present invention, and FIG. 6(b) which is a schematic diagram of aconventional data transmission mode used by a primary serving cell inembodiment 1 of a multiplexing mode of a rapid data transmission modeand the conventional data transmission mode according to the presentinvention; and/or

different subframe sets of a same serving cell use differenttransmission modes, e.g., supposing that subframe 0, subframe 1,subframe 4, subframe 5, subframe 6 and subframe 9 form a subframe set 1,and subframe 2, subframe 3, subframe 7 and subframe 8 form a subframeset 2, the subframe set 1 corresponds to the conventional datatransmission mode, and the subframe set 2 corresponds to the rapid datatransmission mode, as illustrated in FIG. 7; and/or

different time-domain symbols of a same subframe of a same serving celluse different transmission modes, e.g., the first two OFDM symbols ofthe subframe perform data transmission according to the conventionaltransmission mode, and remaining OFDM symbols perform data transmissionaccording to the rapid transmission mode, and the receiving nodeperforms data detection on the first n OFDM symbols of the subframe,e.g., detection of a Physical Control Format Indication Channel (PCFICH)and a PDCCH, a Physical Hybrid Automatic Repeat Indication Channel(PHICH), determines the value of n according to the PCFICH, and performsdata transmission detection according to the rapid data transmissionmode on the remaining OFDM symbols, as illustrated in FIG. 8.

It needs to be stated that the configuration mode of the datatransmission mode of the embodiment of the present invention may use acombination of a plurality of modes, e.g., a combination of a subframeconfiguration mode and a configuration mode based on a serving cell, ora combination of a configuration mode of different time-domain symbolsin a subframe and a configuration mode based on a serving cell, or acombination of a subframe configuration mode, a configuration mode basedon a serving cell, and a configuration mode of different time-domainsymbols in a subframe, etc., which is not limited here.

One or more relationships may exist between the control channel and thedata channel, e.g., different resources select different modes, ordifferent service types select different modes, or different terminalsselect different modes, or different transmission nodes select differentmodes, or different configurations are performed aiming at a pluralityof different resource selections, service types, terminals andtransmission nodes, etc.

Embodiment 1

It is supposed that a sending node is a relay transmission node and areceiving node is user equipment. After the relay transmission node inthis embodiment determines that the user equipment supports a rapid datatransmission mode, data are transmitted between the relay transmissionnode and the user equipment according to the rapid data transmissionmode, and the rapid data transmission mode includes: a time-domainlength of data transmission is configured based on a time-domain symbol.

It needs to be stated that, if the relay transmission node is atransmission node which only supports the rapid data transmission mode,all user equipment accessing to the relay transmission node use therapid data transmission mode to transmit data; and at this moment, amode configuration does not need to be sent to the user equipment andthe user equipment accessing to the relay transmission node canrecognize that the rapid data transmission mode needs to be used toperform data transmission.

However, if the relay transmission node not only supports the rapid datatransmission mode, but also supports a conventional data transmissionmode, the relay transmission node needs to determine whether theaccessing user equipment supports the rapid data transmission modeaccording to predefined transmission information of the user equipment,and the predefined transmission information at least includes at leastone of the following: transmission mode request information, userequipment type and service information, and the transmission moderequest information is sent by the user equipment; the user equipmenttype includes user equipment having an ultralow delay data transmissiondemand; and the service type includes an ultralow delay service, datademanded by a small resource block, etc., e.g., ultrasonic delay demandservices of 1 ms, 20 ms, etc. With respect to the user equipment havingan ultralow delay data transmission demand, the relay transmission nodefurther judges the current service demand, such as Quality of service(Qos) and service type, and determines whether the user equipment usesthe rapid data transmission mode; or the relay transmission nodedetermines whether the user equipment uses the rapid data transmissionmode according to the transmission mode request information receivedfrom the user equipment having the ultralow delay data transmissiondemand, and if the transmission mode request information is not receivedfrom the user equipment, the user equipment uses the conventional datatransmission mode to transmit data; and thereafter, the relaytransmission node sends transmission mode configuration information tothe user equipment to indicate that the transmission mode of the userequipment is the rapid data transmission mode.

Therein, the time-domain symbol includes at least one of the following:an Orthogonal Frequency Division Multiplexing (OFDM) symbol, a SingleCarrier Frequency Division Multiple Access (SC-FDMA) symbol, and anon-orthogonal symbol; and the time-domain length includes h time-domainsymbols, and optionally, h includes at least one of the following: 1, 2,3, 4, 8, 10, the number of time-domain symbols contained in a time slot,the number of time-domain symbols contained in a subframe, and thenumber of time-domain symbols contained in a plurality of subframes.

The time-domain length of the data channel may be dynamically changedand may also be fixed.

Therein, a relationship between the data channel and a correspondingcontrol channel includes at least one of the following:

relationship 1: time-domain symbols of the data channel and time-domainsymbols of the corresponding control channel have the same time-domainstarting position and time-domain ending position, e.g., the time-domainlength of the data channel and the time-length of its correspondingcontrol channel are 1 OFDM symbol, or 2 OFDM symbols, or 3 OFDM symbols,etc.;

relationship 2: a time-domain starting position of time-domain symbolsof the data channel is next to a time-domain ending position oftime-domain symbols of the corresponding control channel, e.g., thetime-domain length of the data channel is 1, 2, or 3 OFDM symbols, andthe time-domain length of the corresponding control channel is 1 OFDMsymbol, etc.;

relationship 3: time-domain symbols of the data channel and time-domainsymbols of the corresponding control channel have the same time-domainstarting position, and a time-domain length of the data channel isgreater than or equal to a time-domain length of the control channel,e.g., the time-domain length of the data channel is 2, 3 or 4 OFDMsymbols, and the time-domain length of its corresponding control channelis 1 OFDM symbol; or the time-domain length of the data channel is 3, 4or 5OFDM symbols, and the time-domain length of the correspondingcontrol channel is 2OFDM symbols, etc.;

relationship 4: time-domain positions of time-domain symbols of the datachannel are determined according to signaling born by the correspondingcontrol channel, e.g., signaling born by the corresponding controlchannel indicates an interval between the time-domain starting positionof the data channel and the time-domain starting position of the controlchannel, and an interval between the time-domain ending position of thedata channel and the time-domain ending position of the control channel;or signaling born by the corresponding control channel indicates thetime-domain starting position of the data channel and the time-domainlength of the data channel; or signaling born by the correspondingcontrol channel indicates an interval between the time-domain startingposition of the data channel and the time-domain starting position ofthe control channel, and the time-domain length of the data channel; orsignaling born by the corresponding control channel indicates aninterval between the time-domain starting position of the data channeland the time-domain ending position of the control channel, and thetime-domain length of the data channel is a fixed value; or signalingborn by the corresponding control channel indicates an interval betweenthe time-domain starting position of the data channel and thetime-domain ending position of the control channel, and the time-domainlength of the data channel, etc.; and

relationship 5: a time-domain position of the data channel and atime-domain position of the control channel have a fixed interval, e.g.,a fixed interval of 1, 3, 5, 8 or 10 OFDM symbols, etc.

The frequency-domain position of the data channel is indicated byinformation born by the corresponding control channel; or thefrequency-domain position is determined according to thefrequency-domain position of the corresponding control channel, e.g.,they are the same frequency-domain positions or have a specific mappingrelationship, e.g., the control channel is located on frequency-domainposition X, the data channel is located on frequency-domain position 2*Xor (X+1), etc.; or the position of the data channel is preconfigured bya base station, etc.

In embodiment 1, transmitting the data according to the rapid datatransmission mode includes: the relay transmission node receiving uplinkdata and its corresponding control channel according to the rapid datatransmission mode, and/or sending downlink data and its correspondingcontrol channel according to the rapid data transmission mode; and theuser equipment receiving downlink data and/or sending uplink dataaccording to the configurations of the data channel and the controlchannel.

The relay transmission node receives the uplink data and thecorresponding uplink control information sent by the user equipment, andthe uplink data are born through the uplink data channel, and the uplinkcontrol information is born through the uplink control channel; and theuplink control information includes at least one of the following:feedback information of downlink data, downlink channel stateinformation and transmission information related to the uplink data.

The transmission information transmitted through the rapid datatransmission mode includes at least one of the following: a size of atransmission block, a new data packet/old data packet, versioninformation, a modulating mode and related reference signal information;the base station firstly decodes the control channel to acquire thetransmission information, and then decodes the data channel according tothe transmission information.

In addition, when the data channel is an uplink data channel, the datachannel may not have a corresponding control channel, and datatransmission is performed in a predefined format according to resourcespre-allocated by the base station and the service demand of the userequipment, e.g., code modulation and sending are performed according tothe transmission block with the predetermined size, and whether datarepeat is performed is determined according to feedback information forthe base station sending data to the user equipment.

Particularly, if the relay transmission node configures that the userequipment simultaneously supports the rapid data transmission mode andthe conventional data transmission mode, the rapid data transmissionmode and the conventional data transmission mode of the receiving nodeare located on different component carriers (serving cells), or arelocated on different subframes of a same component carrier (servingcell) or different time-domain symbols of a same subframe.

Optionally, a primary serving cell uses the conventional datatransmission mode, and a secondary serving cell uses the rapid datatransmission mode; or

the primary serving cell uses the conventional data transmission modeand a dedicated serving cell uses the rapid data transmission mode, andthe dedicated serving cell is a serving cell specially used for therapid data transmission mode or a serving cell specially used formulti-system spectrum share (such as LTE and TD-SCDMA, LTE and WCDMA,LTE and CDMA, etc.), as illustrated, FIG. 6(a) is a schematic diagram ofa rapid data transmission mode used by a dedicated serving cell inembodiment 1 of a multiplexing mode of the rapid data transmission modeand a conventional data transmission mode according to the presentinvention, and FIG. 6(b) is a schematic diagram of a conventional datatransmission mode used by a primary serving cell in embodiment 1 of amultiplexing mode of a rapid data transmission mode and the conventionaldata transmission mode according to the present invention; or

different subframe sets of a same serving cell use differenttransmission modes, e.g., supposing that subframe 0, subframe 1,subframe 4, subframe 5, subframe 6 and subframe 9 form a subframe set 1,and subframe 2, subframe 3, subframe 7 and subframe 8 form a subframeset 2, the subframe set 1 corresponds to the conventional datatransmission mode, and the subframe set 2 corresponds to the rapid datatransmission mode, as illustrated in FIG. 7; or

different time-domain symbols of a same subframe of a same serving celluse different transmission modes, e.g., the first two OFDM symbols ofthe subframe perform data transmission according to the conventionaltransmission mode, and remaining OFDM symbols perform data transmissionaccording to the rapid transmission mode, and the receiving nodeperforms data detection on the first n OFDM symbols of the subframe,e.g., detection of a Physical Control Format Indication Channel (PCFICH)and a PDCCH, a Physical Hybrid Automatic Repeat Indication Channel(PHICH), determines the value of n according to the PCFICH, and performsdata transmission detection according to the rapid data transmissionmode on the remaining OFDM symbols, as illustrated in FIG. 8.

Embodiment 2

User equipment determines whether to transmit data according to a rapiddata transmission mode according to predefined transmission information,and the rapid data transmission mode includes: a time-domain length ofdata transmission is configured based on a time-domain symbol.

Therein, the predefined transmission information at least includes atleast one of the following: configuration information, access system(transmission node) type and service information; the access system typeincludes the system supporting the rapid data transmission mode; theconfiguration information is configuration information sent by thetransmission node; and the service type includes an ultralow delayservice and data demanded by a small resource block, e.g., an ultralowdelay demand service of 1 ms, 20 ms, etc.

Therein, the user equipment may determine whether to transmit dataaccording to the rapid data transmission mode as follows:

the user equipment firstly determines whether the current systemsupports the rapid data transmission mode according to the access systemtype, and if the current system supports the rapid data transmissionmode, when the user equipment has a demand of service type datatransmission, the user equipment performs data transmission in resourcespre-allocated by the relay transmission node or performs datatransmission at resource positions indicated by downlink controlinformation; or

the user equipment firstly determines whether the current systemsupports the rapid data transmission mode according to the access systemtype, and if the current system supports the rapid data transmissionmode, when the user equipment has a demand of service type datatransmission, the user equipment firstly sends transmission mode requestinformation and then transmits data according to the rapid datatransmission mode after receiving feedback of configuration informationrelated to the rapid data transmission mode; or

if the user equipment determines that the current system only supportsthe rapid data transmission mode according to the access system type,data are transmitted according to the rapid data transmission mode inthe system.

The embodiment of the present invention further provides a datatransmission system, at least including a transmission node,

the transmission node is configured to acquire information about a datatransmission mode and transmit data according to the acquired datatransmission mode, herein the information about the data transmissionmode includes a rapid data transmission mode, the rapid datatransmission mode includes: configuring a time-domain length of datatransmission based on a time-domain symbol.

The transmission node includes a sending node and/or a receiving node,and

the sending node is configured to acquire information about a datatransmission mode and transmit data according to the acquired datatransmission mode; and the receiving node is configured to acquire theinformation about the data transmission mode and transmit data accordingto the acquired data transmission mode, herein the information about thedata transmission mode includes a rapid data transmission mode, therapid data transmission mode includes a time-domain length of datatransmission configured based a time-domain symbol.

Therein, the sending node only supports the rapid data transmissionmode.

When the sending node not only supports the rapid data transmissionmode, but also supports a conventional data transmission mode,

the sending node is further configured to determine whether thereceiving node supports the rapid data transmission mode according topreset transmission information of the receiving node, and whendetermining that the receiving node supports the rapid data transmissionmode, send the information about the data transmission mode to thereceiving node to indicate that the data transmission mode of thereceiving node is the rapid data transmission mode, herein the presettransmission information of the receiving node at least includes atleast one of the following: transmission mode request information,device type information and service type information.

The receiving node is further configured to transmit data by using therapid data transmission mode according to the indication of the sendingnode.

The sending node is further configured to, when determining that thereceiving node does not support the rapid data transmission mode,determine that the receiving node transmits data according to theconventional data transmission mode; and correspondingly, the receivingnode is further configured to transmit data by using the conventionaldata transmission mode according to the indication of the sending node.

The sending node is further configured to, when determining that thereceiving node simultaneously supports the rapid data transmission modeand the conventional data transmission mode, set the receiving node tosimultaneously support the rapid data transmission mode and theconventional data transmission mode; and correspondingly, the receivingnode is further configured to perform data transmission in the rapiddata transmission mode and/or the conventional data transmission modeaccording to the setting of the sending node.

The sending node includes, but not limited to, a base station, a relaytransmission node, a wireless gateway or a router; and the receivingnode includes, but not limited to user equipment, a micro base stationor a home base station.

In another embodiment, the present invention further provides datatransmission software, which is used for executing the above-mentionedembodiments and the technical solutions described in the preferredembodiments.

In another embodiment, the present invention further provides a storagemedium, which stores the above-mentioned software and includes, but notlimited to, an optical disk, a soft disk, a hard disk, an erasablememory, etc.

Obviously, one skilled in the art should understand that all modules andall steps in the present invention may be implemented by usinggeneral-purpose computing devices, and they may be integrated in asingle computing device or distributed on a network consisting of aplurality of computing devices. Alternatively they may be implemented byusing program codes executable by computing devices, and thus they maybe stored in memory devices and executed by computing devices, or theymay be respectively manufactured into integrated circuit modules, or aplurality of modules or steps thereof may be manufactured into a singleintegrated circuit module to implement. Therefore, the present inventionis not limited to any specific combination of hardware and software.

What are described above are just preferred embodiments of the presentinvention and are not used for limiting the protection range of thepresent invention. Any modification, equivalent replacement, improvementand the like made within the spirit and principle of the presentinvention shall be also included in the protection range of the presentinvention.

INDUSTRIAL APPLICABILITY

The embodiments of the present invention can reduce data transmissiondelay, satisfy transmission delay requirements under specificapplication scenarios and thus realize rapid data transmission.

1. A data transmission method, comprising: a transmission node acquiringinformation about a data transmission mode, wherein the informationabout the data transmission mode comprises a rapid data transmissionmode, the rapid data transmission mode comprises: configuring atime-domain length of data transmission based on a time-domain symbol;and the transmission node transmitting data according to the acquireddata transmission mode.
 2. The data transmission method according toclaim 1, wherein the transmission node comprises a sending node and thesending node only supports the rapid data transmission mode.
 3. The datatransmission method according to claim 1, wherein the transmission nodecomprises a sending node and a receiving node, and when the sending nodenot only supports the rapid data transmission mode, but also supports aconventional data transmission mode, the method further comprises: thesending node determining whether the receiving node uses the rapid datatransmission mode; and when determining that the receiving node uses therapid data transmission mode, sending the information about the datatransmission mode to the receiving node to indicate that the datatransmission mode of the receiving node is the rapid data transmissionmode.
 4. The data transmission method according to claim 3, whereindetermining whether the receiving node uses the rapid data transmissionmode comprises: determining whether the receiving node uses the rapiddata transmission mode according to preset transmission information ofthe receiving node.
 5. The data transmission method according to claim4, wherein the preset transmission information of the receiving node atleast comprises at least one of the following: transmission mode requestinformation, device type information and service type information. 6.The data transmission method according to claim 4, wherein determiningwhether the receiving node uses the rapid data transmission modecomprises: if the sending node receives transmission mode requestinformation from the receiving node, the sending node determining thatthe receiving node uses the rapid data transmission mode; or if thesending node determines that a type of the receiving node is a devicesupporting rapid data transmission according to device type informationof the receiving node, the sending node determining that the receivingnode uses the rapid data transmission mode; or if the sending nodedetermines that a service type of the receiving node comprises anultralow delay service and/or data demanded by a small resource blockaccording to service type information of the receiving node, the sendingnode determining that the receiving node uses the rapid datatransmission mode; or if the sending node determines that a receivingdevice is a device supporting rapid data transmission according todevice type information of the receiving node and determines that thereceiving device is of a service type using rapid data transmissionaccording to a service type of the receiving device, the sending nodedetermining that the receiving node uses the rapid data transmissionmode.
 7. The data transmission method according to claim 1, wherein thetransmission node comprises a sending node and a receiving node, and ifthe sending node determines that the receiving node simultaneously usesthe rapid data transmission mode and the conventional data transmissionmode, the method further comprises: the sending node setting thereceiving node to simultaneously use the rapid data transmission modeand the conventional data transmission mode.
 8. The data transmissionmethod according to claim 7, wherein the rapid data transmission modeand the conventional data transmission mode of the receiving node arelocated in different serving cells, or are located on differentsubframes of a same serving cell, or are located on differenttime-domain symbols of a same subframe of a same serving cell.
 9. Thedata transmission method according to claim 8, wherein, when thereceiving node simultaneously supports the rapid data transmission modeand the conventional data transmission mode, the method comprises atleast one of the following: a primary serving cell of the receiving nodeusing the conventional data transmission mode, and a secondary servingcell of the receiving node using the rapid data transmission mode; theprimary serving cell of the receiving node using the conventional datatransmission mode and a dedicated serving cell of the receiving nodeusing the rapid data transmission mode; different subframe sets of asame serving cell of the receiving node using different transmissionmodes; and different time-domain symbols of a same subframe of a sameserving cell of the receiving node using different transmission modes.10. The data transmission method according to claim 1, wherein thetransmission node comprises a sending node and a receiving node; andsaid acquiring information about a data transmission mode comprises: anupper node in a transmission network sending the information about thedata transmission mode to the sending node before the data transmission,and the sending node sending the information about the data transmissionmode to the receiving node; or the sending node sending the informationabout the data transmission mode to the receiving node before thesending node sends data when the receiving node needs to perform datatransmission; or the sending node sending the information about the datatransmission mode in control information corresponding to data when thereceiving node needs to perform data transmission; or dynamicallydetermining the information about the data transmission mode accordingto data information which needs to be transmitted when data transmissionis performed between the sending node and the receiving node.
 11. Thedata transmission method according to claim 1, wherein the time-domainsymbol at least comprises: an Orthogonal Frequency Division Multiplexing(OFDM) symbol, or a Single Carrier Frequency Division Multiple Access(SC-FDMA) symbol, or a non-orthogonal symbol.
 12. The data transmissionmethod according to claim 11, wherein the time-domain length comprises htime-domain symbols, wherein h is a preset numerical value, or a numberof time-domain symbols contained in a time slot, or a number oftime-domain symbols contained in a subframe, or a number of all orpartial time-domain symbols contained in a plurality of subframes. 13.The data transmission method according to claim 12, wherein the numberof the time-domain symbols for transmitting data in the time-domainlength is preset; or the number of the time-domain symbols isdynamically determined according to data information which needs to betransmitted.
 14. The data transmission method according to claim 12,wherein a determining mode of a time-domain region of the time-domainsymbols in the subframe is: determining a time-domain starting positionof the time-domain symbols according to position information designatedby sent signaling; or a time-domain starting position of the time-domainsymbols being the same as a time-domain starting position of a downlinkcontrol channel related to data, or determining a time-domain startingposition of the time-domain symbols according to a time-domain startingposition of a control channel related to data.
 15. The data transmissionmethod according to claim 14, wherein a relationship between the datachannel and a corresponding control channel is that: time-domain symbolsof the data channel and time-domain symbols of the corresponding controlchannel have a same time-domain starting position and time-domain endingposition; or a time-domain starting position of time-domain symbols ofthe data channel is next to a time-domain ending position of time-domainsymbols of the corresponding control channel of the data channel, and atthis moment, the data channel and the corresponding control channel ofthe data channel have same frequency-domain positions, or the two havedifferent or partially same frequency-domain positions; or time-domainsymbols of the data channel and time-domain symbols of the correspondingcontrol channel of the data channel have a same time-domain startingposition, and a time-domain length of the data channel is greater thanor equal to a time-domain length of the control channel, wherein thetime-domain length of the data channel may be preset, or indicated bysignaling from the sending node or determined according to thetime-domain length of the control channel, or there is a preset mappingrelationship between the time-domain length of the data channel and thetime-domain length of the control channel; or time-domain positions oftime-domain symbols of the data channel are determined according tosignaling born by the control channel corresponding to the data channel,and a time-domain starting position of time-domain symbols of the datachannel is earlier or later than or the same as a time-domain startingposition of time-domain symbols of the control channel; or a time-domainstarting position of time-domain symbols of the data channel is setaccording to the time-domain length of the data channel, and atime-domain symbol region of the control channel is located at a presetposition in a time-domain length region of the data channel; or atime-domain length region position of the data channel and a time-domainlength region positions of the control channel have a preset interval t.16. (canceled)
 17. (canceled)
 18. The data transmission method accordingto claim 15, wherein the data channel and the corresponding controlchannel of the data channel comprise: a downlink data channel and acorresponding downlink control channel of the downlink data channel,and/or an uplink data channel and a corresponding uplink control channelof the uplink data channel; and if the uplink data channel usesautonomous scheduling, the uplink control channel is used for indicatingrelated transmission information of the corresponding data channel. 19.The data transmission method according to claim 1, wherein transmittingthe data according to the data transmission mode comprises: transmittinguplink data and a corresponding control channel of the uplink dataaccording to the data transmission mode, and/or transmitting downlinkdata and a corresponding control channel of the downlink data accordingto the data transmission mode, wherein the uplink data are born throughan uplink data channel, uplink control information is born through anuplink control channel and the transmission comprises sending and/orreceiving.
 20. The data transmission method according to claim 1,wherein the sending node comprises a base station, a relay transmissionnode, a wireless gateway or a router; and the receiving node comprisesuser equipment, a micro base station or a home base station. 21.(canceled)
 22. (canceled)
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 33. A sending node, configuredto acquire information about a data transmission mode and transmit dataaccording to the acquired data transmission mode, wherein theinformation about the data transmission mode comprises a rapid datatransmission mode, the rapid data transmission mode comprises:configuring a time-domain length of data transmission based on atime-domain symbol.
 34. The sending node according to claim 33, whereinthe sending node only supports the rapid data transmission mode.
 35. Thesending node according to claim 33, wherein, when the sending node notonly supports the rapid data transmission mode, but also supports aconventional data transmission mode, the sending node is furtherconfigured to determine whether a receiving node supports the rapid datatransmission mode according to preset transmission information of thereceiving node, and when determining that the receiving node uses therapid data transmission mode, send the information about the datatransmission mode to the receiving node to indicate that the datatransmission mode of the receiving node is the rapid data transmissionmode; and the preset transmission information of the receiving node atleast comprises at least one of the following: transmission mode requestinformation, device type information and service type information. 36.The sending node according to claim 35, wherein the sending node isfurther configured to, when determining that the receiving node does notsupport the rapid data transmission mode, determine that the receivingnode transmits data according to the conventional data transmissionmode.
 37. The sending node according to claim 35, wherein the sendingnode is further configured to, when determining that the receiving nodesimultaneously supports the rapid data transmission mode and theconventional data transmission mode, set the receiving node tosimultaneously support the rapid data transmission mode and theconventional data transmission mode.
 38. The sending node according toclaim 33, wherein the sending node comprises a base station, a relaytransmission node, a wireless gateway or a router.
 39. The sending nodeaccording to claim 33, wherein the time-domain symbol at leastcomprises: an Orthogonal Frequency Division Multiplexing (OFDM) symbol,or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol,or a non-orthogonal symbol.
 40. The sending node according to claim 39,wherein the time-domain length comprises h time-domain symbols, whereinh is a preset numerical value, or a number of time-domain symbolscontained in a time slot, or a number of time-domain symbols containedin a subframe, or a number of all or partial time-domain symbolscontained in a plurality of subframes.
 41. The sending node according toclaim 40, wherein the number of the time-domain symbols for transmittingdata in the time-domain length is preset; or the number of thetime-domain symbols is dynamically determined according to datainformation which needs to be transmitted.
 42. The sending nodeaccording to claim 40, wherein the sending node is further configured todetermine a time-domain region of the time-domain symbols in thesubframe by means of: determining a time-domain starting position of thetime-domain symbols according to position information designated by sentsignaling; or a time-domain starting position of the time-domain symbolsbeing the same as a time-domain starting position of a downlink controlchannel related to data, or determining a time-domain starting positionof the time-domain symbols according to a time-domain starting positionof a control channel related to data.
 43. The sending node according toclaim 42, wherein a relationship between the data channel and acorresponding control channel is that: time-domain symbols of the datachannel and time-domain symbols of the corresponding control channelhave a same time-domain starting position and time-domain endingposition; or a time-domain starting position of time-domain symbols ofthe data channel is next to a time-domain ending position of time-domainsymbols of the corresponding control channel of the data channel, and atthis moment, the data channel and the corresponding control channel ofthe data channel have same frequency-domain positions, or the two havedifferent or partially same frequency-domain positions; or time-domainsymbols of the data channel and time-domain symbols of the correspondingcontrol channel of the data channel have a same time-domain startingposition and a time-domain length of the data channel is greater than orequal to a time-domain length of the control channel, wherein thetime-domain length of the data channel may be preset, or indicated bysignaling from the sending node or determined according to thetime-domain length of the control channel, or there is a preset mappingrelationship between the time-domain length of the data channel and thetime-domain length of the control channel; or time-domain positions oftime-domain symbols of the data channel are determined according tosignaling born by the control channel corresponding to the data channel,and a time-domain starting position of time-domain symbols of the datachannel is earlier or later than or the same as a time-domain startingposition of time-domain symbols of the control channel; or a time-domainstarting position of time-domain symbols of the data channel is setaccording to the time-domain length of the data channel, and atime-domain symbol region of the control channel is located at a presetpositions in a time-domain length region of the data channel; or atime-domain length region position of the data channel and a time-domainlength region position of the control channel have a preset interval t.44. (canceled)
 45. A receiving node, configured to acquire informationabout a data transmission mode; and transmit data according to theacquired data transmission mode, wherein the information about the datatransmission mode comprises a rapid data transmission mode, the rapiddata transmission mode comprises: configuring a time-domain length ofdata transmission based on a time-domain symbol.
 46. The receiving nodeaccording to claim 45, wherein the receiving node is further configuredto transmit data by using the rapid data transmission mode and/or aconventional data transmission mode according to an indication of asending node.
 47. The receiving node according to claim 45, wherein thereceiving node comprises user equipment, a micro base station or a homebase station.
 48. The receiving node according to claim 45, wherein thetime-domain symbol at least comprises: an Orthogonal Frequency DivisionMultiplexing (OFDM) symbol, or a Single Carrier Frequency DivisionMultiple Access (SC-FDMA) symbol, or a non-orthogonal symbol.
 49. Thereceiving node according to claim 48, wherein the time-domain lengthcomprises h time-domain symbols, wherein h is a preset numerical value,or a number of time-domain symbols contained in a time slot, or a numberof time-domain symbols contained in a subframe, or a number of all orpartial time-domain symbols contained in a plurality of subframes. 50.The receiving node according to claim 49, wherein the number of thetime-domain symbols for transmitting data in the time-domain length ispreset; or the number of the time-domain symbols is dynamicallydetermined according to data information which needs to be transmitted.51. The receiving node according to claim 48, wherein the receiving nodeis further configured to determine a time-domain region of thetime-domain symbols in the subframe by means of: determining atime-domain starting position of the time-domain symbols according toposition information designated by sent signaling; or a time-domainstarting position of the time-domain symbols being the same as atime-domain starting position of a downlink control channel related todata, or determining a time-domain starting position of the time-domainsymbols according to a time-domain starting position of a controlchannel related to data.
 52. The receiving node according to claim 51,wherein a relationship between the data channel and a correspondingcontrol channel is that: time-domain symbols of the data channel andtime-domain symbols of the corresponding control channel have a sametime-domain starting position and time-domain ending position; or atime-domain starting position of time-domain symbols of the data channelis next to time-domain ending position of time-domain symbols of thecorresponding control channel of the data channel, and at this moment,the data channel and the corresponding control channel of the datachannel have same frequency-domain positions, or the two have differentor partially same frequency-domain positions; or time-domain symbols ofthe data channel and time-domain symbols of the corresponding controlchannel of the data channel have a same time-domain starting position,and a time-domain length of the data channel is greater than or equal toa time-domain length of the control channel, wherein the time-domainlength of the data channel may be preset, or indicated by signaling ordetermined according to the time-domain length of the control channel,or there is a preset mapping relationship between the time-domain lengthof the data channel and the time-domain length of the control channel;or time-domain positions of time-domain symbols of the data channel aredetermined according to signaling born by the control channelcorresponding to the data channel, and a time-domain starting positionof time-domain symbols of the data channel is earlier or later than orthe same as a time-domain starting position of time-domain symbols ofthe control channel; or a time-domain starting position of time-domainsymbols of the data channel is set according to the time-domain lengthof the data channel, and a time-domain symbol region of the controlchannel is located at a preset position in a time-domain length regionof the data channel; or a time-domain length region position of the datachannel and a time-domain length region position of the control channelhave a preset interval t.
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